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Methods and apparatus for a continuous wound laminate rotor flux path

A rotor, layered technology, applied in the manufacture of stator/rotor body, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problems of inability to provide circumferential strength, limited holding capacity, material waste, etc.

Active Publication Date: 2010-11-24
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, their holding capacity is limited since for the most part they are fixed only at the crests and thus cannot provide strong radial compressive forces
Also, because the crests are not interconnected, they generally do not provide "hoop strength" (ie, resistance to internal radial pressure) relative to the windings and stator core
Furthermore, such rotor flux path designs are typically fabricated as separately machined components, which can result in significant material waste

Method used

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  • Methods and apparatus for a continuous wound laminate rotor flux path
  • Methods and apparatus for a continuous wound laminate rotor flux path
  • Methods and apparatus for a continuous wound laminate rotor flux path

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Embodiment Construction

[0030] In general, the invention relates to a rotor flux path structure formed by patterned strips of material wound in a polygonal helical pattern to form a continuous layered ring structure. With this in mind, the following detailed description is merely descriptive in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. The invention is described herein in terms of functional and / or logical block components and various processing steps. It should be appreciated that such block components may be realized by any number of hardware, software, and / or firmware components configured to perform the specified functions. For the sake of clarity, conventional techniques and systems involving electric motors, magnetism, etc., are not described in detail ...

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PUM

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Abstract

A rotor assembly is assembled by providing an elongated rectangular strip of material having a first edge and a second edge defining a width, cutting the elongated rectangular strip to form a first patterned strip having a first side corresponding to the first edge, winding the first patterned strip portion around the perimeter of the rotor core such that the first edge is adjacent to the perimeter and the patterned strip portion forms a continuous laminated ring structure. Two laminated ring structures can be cut from a single strip, thereby reducing waste material and forming a strong structure.

Description

technical field [0001] The present invention relates generally to magnetic devices such as electric motors, and more particularly to structures for holding windings and providing a flux path for a rotor within such devices. Background technique [0002] Electric motors typically include a rotor core (eg, a laminated or solid core rotor) that includes a plurality of windings and has some form of structure attached to the outer perimeter of the assembly to retain the windings and provide a rotor flux path. One such structure is known as a "creep", which is a part of the tooth structure that is slotted to accommodate the tooth structure formed on the exterior of the rotor core. [0003] While such addendums can provide adequate rotor flux paths, they are unsatisfactory in many respects. For example, their holding capacity is limited, since for the most part they are fixed only at the crests, and thus cannot provide strong radial compressive forces. Furthermore, because the cr...

Claims

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Application Information

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IPC IPC(8): H02K15/02
CPCH02K1/24H02K15/022Y10T29/49009Y10T29/49012Y02P80/30
Inventor E·黑奇C·C·斯坦库P·J·萨瓦吉安
Owner GM GLOBAL TECH OPERATIONS LLC